Tag Archives: Arduino Micro

Tracking Alzheimer’s Disease patients with Arduino

This DIY GPS tracker will let you know when a loved one with Alzheimer’s wanders off.

Anyone who has ever had a loved one suffer from Alzheimer’s Disease is all too familiar with the significance of taking the necessary steps to ensure that person’s well-being. As the disease progresses, those with the disease experience worsening memory loss, difficulty in responding to their environment, and other intellectual abilities serious enough to interfere with daily life. In fact, a number of patients tend to wander from places of safety.


So in an effort to help solve this problem, Maker Logan Prasser — in collaboration with Sean Halloran and Gvozden Suvajlo — has devised a GPS device that can track a sufferer’s movements and send an alert to a caregiver if and when they leave a pre-defined range. The gadget, which consists of a 3D-printed case, can be easily slipped inside a pocket by a caretaker, who can then monitor the patient’s movements from afar. While there are a few commercial solutions on the market today, most are a bit complex and costly when compared to this DIY project.


Housed within the device’s 3D-printed shell is an Arduino Micro (ATmega32U4), an Adafruit FONA board, a GPS breakout board and antenna, along with a 9V battery. The Maker programmed the Micro to communicate with both the cell and GPS modules. When the GPS module is not within its specified boundary, the tracker notifies the caretaker via text.


Though not required, Prasser suggests using a solar board for charging the 3.7V battery and using solar panels. Another optional step includes adding a button and LED to the device.

Have a loved one who could surely benefit from this DIY solution? Check out the Maker’s step-by-step breakdown on Instructables here.

12 projects that are redefining storytelling

In honor of World Book Day, here are some Maker innovations that are redefining storytelling…

They say stories can come to life, and well, these projects have taken that saying to an entirely new level.

This isn’t your typical coffee table book


Jonathan Zufi’s coffee table book entitled “ICONIC: A Photographic Tribute to Apple Innovation is the ultimate must-have for any Apple aficionado. The hardcover recounts the past 30 years of Apple design, exploring some of the most visually appealing and significant products ever created by the Cupertino-based company. The commemorative piece features a special white clamshell case along with a custom PCB configured to pulse embedded LEDs — like that of a sleeping older generation Apple notebook when moved — controlled by an Atmel 8-bit AVR RISC-based MCU.

This magical device will add augmented reality to storybooks 


The brainchild of Disney Research, HideOut explores how mobile projectors can enable new forms of interaction with digital content projected on everyday objects such as books, walls, game boards, tables, and many others. The smartphone-sized device enables seamless interaction between the digital and physical world using specially formulated infrared-absorbing markers – hidden from the human eye, but visible to a camera embedded in a compact mobile projection device. Digital imagery directly augments and responds to the physical objects it is projected on, such as an animated character interacting with printed graphics in a storybook.

This interactive piece of art tells a narrative


Created by Fabio Lattanzi Antinori, Dataflags is a narrative series of artwork that explores the financial troubles of corporations as they head towards bankruptcy, while highlighting the pivotal role data plays in today’s society. The piece — which was originally displayed in London’s Victoria & Albert Museum back in September 2014 — was powered by Bare Conductive’s incredibly-popular Touch Board (ATmega32U4) and some Electric Paint. The printed sensors were concealed by a layer of black ink, and when touched, triggered a selection of financial trading data theatrically sung by an opera performer.

This book judges you with its cover


Have you ever judged a book by its cover? Well, Amsterdam creative studio Moore is turning the tables on the old-school idiom by designing a sleeve equipped with an integrated camera and facial-recognition technology that scans the face of whoever comes near. The idea behind the aptly named Cover That Judges You was to build a book cover that is human and approachable-hi-tech. If someone conveys too much emotion – whether overexcitement or under-enthusiasm — the book will remain locked. However, if their expression is free of judgement, the system will send an audio-pulse to an Arduino Uno (ATmega328) and the book will unlock itself. The built-in camera is positioned at the top of the book’s sleeve, above a screen that feeds back the image when it detects a face in close proximity. Artwork featuring abstract facial features is displayed on the cover so that the user can line up their eyes, nose and mouth in the optimum position. Once the correct alignment is obtained, the screen turns green and a signal is relayed to the Arduino that opens the metal lock.

This interactive book lets you feel characters’ emotions


A team of MIT students unveiled a wearable book that uses networked sensors and actuators to create a sort of cyberpunk-like Neverending Story, blurring the line between the bodies of a reader and protagonist. The sensory fiction project — which built around James Tiptree’s “The Girl Who Was Plugged In” – was designed by Felix Heibeck, Alexis Hope, Julie Legault and Sophia Brueckner in the context of MIT’s Science Fiction To Science Fabrication class. The “augmented book” portrays the scenery and sets the mood, while its companion vest enables the reader to experience the protagonist’s physiological emotions unlike ever before. The wearable — controlled by an [Atmel based] Arduino board — swells, contracts, vibrates, heats up or cools down as the pages of the book are turned. Aside from 150 programmable LEDs to create ambient light based on changing setting and mood, the book/wearable support a number of outputs, including sound, a personal heating device to change skin temperature, vibration to influence heart rate, and a compression system to convey tightness or loosening through pressurized airbags.

This storytelling tree reads with you


In an effort to bring more interaction to story time, Northwood’s Childrens Museum in Wisconsin created a storytelling tree capable of reading along with you. The old computers inside the the museum display were retrofitted with a Touch Board (ATmega32U4) from Bare Conductive. In fact, this was a welcomed replacement as one staff member said that the computers “broke constantly and hogged power, keeping us from updating sounds files periodically throughout the year.”  Unlike its embedded predecessor, the MCU allowed sound files to be changed in an expedited manner, and was slim enough to nestle neatly into the trunk’s design. And what would a treehouse-like exhibit be without a makeshift walkie talkie comprised of cans strung together? Creatively, a set of headphones were also placed inside the can to make it exciting for participants to listen to the story.

This book blends the analog and digital worlds


Makers Israel Diaz and Ingrid Ocana were on a mission to find new ways to bring children closer to the vast universe of reading. In doing so, the duo figured out a new way to enhance a traditional book with basic electronic components and some Arduino Uno (ATmega328) programming to interact with user intervention through simple built-in sensors, AC motors, LEDs and speakers.

This tale is told with the turn of a music box handle


Night Sun is an interactive audiovisual installation which tells a story with the turn of a music box handle, powered by an ATmega32U4 MCU. In order to bring his idea to fruition, the Maker commissioned an Arduino Micro to control the exhibit. The Arduino was instructed to send a ‘play’ command to a computer when it sensed the touch of a passerby. Once the wired music box handle was turned, the window would light up. A pre-recorded sound would then send a signal to the computer and begin playing… and just like that, the story unfolds.

This pop-up book is made for the digital age 


A Maker by the name of Antonella Nonnis recently devised a unique interactive electronic book powered by two ATmega168 based boards. The book, titled “Music, Math, Art and Science,” was inspired by the work of Munari, Montessori and Antonella’s very own mother. The book contains movable parts and uses the electrical capacitance of the human body to activate sounds and lights and other sensors like a button for the math page. Comprised of recycled materials, the book is powered by a pair of Arduino Diecimila, which control the paper pop-up piano and the other controls the arts and science page.

These soft puppets are recreating fables for kids and parents


Footprints – which was prototyped using an Arduino Uno (ATmega328) – can best be described as a network of interactive soft puppets that help create and share illustrated stories. Designed by Simone Capano, the project links various aspects of a child’s life, including school and family, by collecting and storing relevant data in the cloud. Footprints is typically initiated by a parent. Using a smartphone, the parent can record a little vocal story, add some images proposed by Footprints about the story that was just told, like the story’s characters or other objects related to it. Afterwards, the parent can send it all to the child’s puppet. The child can then listen to the story by placing the puppet on the tablet and playing with the images he or she has received to create a drawing about the story. Once the drawing is complete, Footprints send it back to the parent who then tracks the path of the stories shared with a child via the smartphone app.

This book really sets the scene


Created by Bertrand Lanthiez, Hvísl is described as “an invitation to both a visual and audible journey.” Pre-recorded sounds from Icelandic atmospheres are emitted with the help of electronic sensors hidden in some pages connected to a MaKey MaKey board (ATmega32U4). These effects accompany the reading and the contemplation of pictures from the country’s landscape.

This bookmark makes sure you never miss a part


Tired of having to reread pages in because you forgot which paragraph you left off on? Devised by 7Electrons, the aptly named eBookmark is envisioned to serve as a bridge between analog and digital worlds. The device — which is based on an 8-bit AVR MCU, various Adafruit components, 16 tiny LEDs and a resistive touch strip — allows the reader to save his or her place on the page, and with a switch, also select the left or right page. The top portion of the eBookmark extends for use with larger books.

This fiction machines lets you create your own narrative


Who could forget those ‘Choose Your Own Adventure’ books that became popular in the ‘80s and ‘90s? The series of children’s gamebooks where each story is written from a second-person point of view, with the reader assuming the role of the protagonist and making choices that determine the main character’s actions and the plot’s outcome. Similarly speaking, software developer Jerry Belich has created an interactive arcade machine that works on the same premise. The Choosatron is an interactive fiction machine that lets users select the story, while it prints out a transcript of the chosen story paths. In essence, the machine is a cardboard box with a small thermal printer, a coin acceptor, a keypad, an SD memory card and an Arduino-compatible board.

Widerun is bringing virtual reality to indoor cycling

This interactive bike trainer is designed to deliver engaging fitness sessions through VR headsets. 

Let’s face it, stationary biking can be boring. But what if, during your workout, you were suddenly immersed in an intense uphill battle in the Tour de France, a leisurely ride along the picturesque Pacific Coast Highway, or a thrilling escape from zombies in a Walking Dead-like post-apolocayptic world? That may soon be a reality thanks to one Italian startup that has debuted on Kickstarter.


While turbo trainers that allow avid cycling enthusiasts to use their actual bike indoors is fairly common, Widerun is a smart bike trainer designed to connect to virtual reality head-mounted units. At the moment, the system offers support for Oculus Rift and Samsung Gear VR, as well as other mobile VR displays. Widerun pairs to either a PC or smartphone via Bluetooth Low Energy with a theoretical distance over 100 meters.

Everything on the bike functions as it would had you actually been riding in these various settings. Meaning, when you switch gears to cycle faster or slower, Widerun transmits the real-world changes caused by the cyclist into the virtual world. As a true plug-and-play system, users don’t need a special bike to enjoy an immersive VR cycling experience. Instead, Widerun accommodates any piece of equipment with a wheel radius between 26″ to 29” — no adjustments necessary.


What’s more, Widerun features real-time, coherent feedback between your movement and your reaction in the VR world.

“One of the crucial aspects into delivering the best immersive virtual reality biking experience is the possibility to regulate the resistance and the inertia on the rear wheel according to the position in the 3D VR world,” the team writes. In other words, a rider will feel as if they are climbing mountains, breezing through forests or descending steep hills, as the trainer will automatically regulate its resistance.

Beyond that, Widerun also offers gamification and community elements that encourage users to choose among various VR settings to ride, engage with other cyclists, locate people to challenge, and monitor their performance history.


In order to create the most optimal VR biking experience possible, the team designed Widerun with two components: the trainer itself and a steering part that appears to be based on an Arduino Micro (ATmega32U4). An embedded MCU receives inputs from both the game environment and the bike trainer to regulate back the electrical signals to match the virtual experience the user is having, such as steering degree, speed magnitude and ground resistance.

Widerun hopes to get other VR software developers onboard in the coming months. The team notes, “We believe that there are many amazing wizards in game design and development out there able to create even better 3D environments where to bike through Widerun. We decided to include with any type of pledge the complete SDK to let you build and (if you like) upload your own VR worlds! We’re looking forward to bike in your VR creations!”

Interested? Head over to its official Kickstarter page, where the Widerun team is currently seeking £30,000. Shipment is expected to begin early next year. 

Creating an open-source quartz crystal microbalance with Arduino

openQCM is a highly-sensitive microbalance with a wide-range of applications in chemistry, biology and material science.

Created by a group of Italian physicists, openQCM is a fully open-source quartz crystal microbalance project built around the versatile Arduino Micro (ATmega32U4). Impressively, the gadget is capable of weighing mass deposition down to one billionth of gram.

For those unfamiliar with the piezoelectric devices, a QCM is an extremely sensitive mass sensor capable of measuring mass changes in the nanograms. When an object is placed on the sensor’s surface, the fluctuations in the crystal’s resonant frequency are detected and used to determine its mass in a variety of experimental conditions. In this case, the openQCM was designed for use in air, liquid and vacuum, and features a sensitivity of 700 picograms.


Novaetech S.r.l. initially developed openQCM with the emergent principles of the open-source hardware movement in mind. Team member Marco Mauro notes that while open hardware has already made an impact across a wide-range of segments, when it comes to scientific applications, its potential is even greater.

“openQCM is the first open hardware quartz crystal microbalance with applications in a wide range of scientific fields, such as chemical and biological sensing, material science,” the team writes.


openQCM is based on an Arduino Micro and is powered via USB connection. This enables users to hack the timer counter on the on-board ATmega32U4 to measure the quartz crystal frequency variations using its 16Mhz processor clock. Its creators also designed an Arduino Micro shield with an embedded quartz crystal oscillator driver circuit and a temperature sensor. As noted, this plays an integral role in checking the thermal stabilization of the device. The output of the driver is relayed to the Arduino timer counter, while the analog value of the temperature sensor is fed to the board’s analog pin. This configuration allows researchers to measure quartz crystal frequency with a resolution of 1Hz.

In an effort to reduce costs without sacrificing quality, the team decided to 3D print the openQCM prototypes using the SLS process. Embodying true Maker spirit, this lets everyone modify and print their own enclosure.


“openQCM belongs to a new generation of innovative smart sensor which boast high resolution and ultra high mass sensitivity. The open source strategy made the creation of openQCM available at low cost which represents a bit fraction of the cost of similar scientific products,” the team concludes.

Despite its affordability and ease-of-use, its creators assure its accuracy and stability is fully comparable with most common scientific devices available on the market today. Interested in learning more? Head over to openQCM’s official page here.

This 3D-printed, Arduino-powered device can treat hypothermia

A team of students has created a portable heated IV device for extreme climate situations and high-altitude climbers.

Hypothermia is a serious danger to high-altitude climbers. When a patient suffering from hypothermia is brought to a hospital for medical assistance, a doctor typically begins treating the patient through the use of a heated IV. Injecting warm saline solution into the body raises the patient’s core temperature along with properly hydrating them. However, often times those suffering from hypothermia don’t have immediate access to medical assistance.


Cognizant of this, a team of students at NuVu Studio have created a portable heated IV for extreme climate situations and high-altitude climbers suffering from hypothermia, or dehydration for that matter. This product, which they call Backcountry IV, is not supposed to heal a person completely; instead, it is intended to serve as a temporary aid to prolong the user’s life until they can receive actual medical help.

The students were able to bring the idea to fruition, which resembles that of a mini flashlight and lantern, through the use of 3D printing. The device works by purifying water using a 3D-printed cap with built-in UV lights, which connects to another compartment containing ceramic resistors that heat the liquid between 104-106°F.  Once this is done, the water flows through the IV tubing until it reaches the needle that is clipped onto the specialized, 3D-printed cuff resting on a hiker’s forearm. The canister also holds several other necessary parts like a salt tablet and an infrared light vein finder.


“The importance of the product is clear — it could be the defying factor of a high altitude climber’s survival. Without the Portable Warm IV, a person could possibly die of hypothermia on the mountain but with the IV, the chance of his or her core body temperature warming enough to prolong the survival long enough to receive medical assistance is likely. There are no existing products that are capable of helping high altitude mountaineers let alone in extreme conditions return their body to a normal temperature. Since hypothermia is such a serious threat to the lives of mountaineers, it is crucial to have a device that would keep them alive at high altitudes and dangerously cold temperatures. The portable warm IV would bring the user fundamental and pragmatic medical attention immediately, making it a life-changing product… Literally,” the team writes.

The students constructed each part of this device using an ATmega2560 powered MakerGear 3D printer, with the exception of the actual IV and electronic panel, where the Arduino Micro (ATmega32U4) sits.


“This process began by simply hooking a 3.9 ohm resistor up to the Arduino and attaching the resistor up to the temperature sensor in order to read the heat that the resistor was giving off. Initially there was not enough power to make the resistor heat up to the optimal heat. Many alterations were then made over a span of three days. The result was four resistors soldered in series hooked up to an 11 volt lithium polymer battery. This battery provided the correct amount of power in order to heat the resistors up to the correct temperature.”

Interested in learning more? Check out the team’s entire build log here. This is just one of many Atmel based projects that are ‘making’ a difference in the world. Have a similar idea? Be sure to submit it for a chance to win The Hackaday Prize!

Build your own in-home basketball hoop scorekeeper

Upgrade your in-home NERF basketball game with this Arduino-powered scorekeeper. 

Who could forget the days of playing NERF basketball inside the house? If so, chances are that you also vividly recall the yelling of parents urging you to stop. Nowadays, you may even have a similar hoop the back of your office door — you know, something to keep you occupied during those boring conference calls. Sparking up some of that childhood nostalgia is this latest project from Maker Robbie Frazelle, who recently devised an in-home hoop scorekeeper powered by an Arduino Micro (ATmega32U4).


Inspired by an earlier Instructables project, the Maker acquired an indoor hoop and coupled it together with a digital distance sensor, a quad alphanumeric display, a Perma-Proto half-sized breadboard, a USB charger, and most importantly, an Arduino Micro — though he had initially hoped to use an Adafruit Trinket (ATtiny85) — to control the system. These electronics were all housed inside a plexiglass enclosure. Double-sided Loctite tape was used to secure the proto-board to the backboard and placed below the acrylic case. Meanwhile, a dual-AA battery pack was affixed to the back of the hoop, directly behind the proto-board using the same tape.


How the system works is relatively simple. A user shoots the ball. As it makes its way through the net, a distance sensor is triggered and the score is displayed via the Arduino. The entire unit is powered on/off by plugging the USB cable into the Arduino, or from the battery pack side. According to Frazelle, the scorekeeper could run for about three hours before dying, though he does note that a rechargeable USB power stick would be much more efficient.


“This worked on the first test, which was pretty awesome! I was concerned about the net movement giving false readings to the sensor, but I wasn’t able to create an erroneous score even with rim shots and air balls. I give credit to the sensor placement in relation to the holes in the net.”

Interested in a scorekeeper of your own? Head over to the project’s official page here.

Rocking out with a DIY Arduino synth guitar

Maker creates a slick synth guitar out of an old drum machine, ribbon potentiometers, a joystick shield and an Arduino. 

Recently brought to our attention by our friends at Hackadaya Maker by the name of “Gr4yhound” has devised a slick synth guitar comprised entirely from scratch using an old Yamaha DD-55 drum machine, some SoftPot ribbon potentiometers, a SparkFun joystick shield, and an Arduino Micro (ATmega32U4).


The device itself consists of two components, a guitar body and neck. The body is made from a piece of pine that was cut using Gr4yhound’s homemade CNC machine, while three circles were routed out to make room for the Yamaha drum pads, wiring and the joystick shield. Meanwhile, the neck was actually derived from a de-fretted Squire Affinity Strat neck.


Three SoftPot membrane potentiometers were added to the neck to simulate strings. Beyond that, the drum pad trio acts as touch sensors, allowing Gr4yhound to play each string simultaneously and form tunes. The joystick shield enables Gr4yhound to add additional effects to the overall sound, and an Arduino Micro serves as the primary controller and transmits the musical notes as MIDI commands. The Maker used a commercial MIDI to USB converter in order to play the music on a computer, while converter lets him power the Arduino via USB.

Ready to rock out? Head on over to the project’s official build log here, or watch it in action below!

Can’t draw? This machine will show you how

Have you always wished you had some sort of artistic abilities? Well, thanks to one Maker, a tiny machine can help. 

Da Vinci, van Gogh, Rembrandt, Monet, Picasso. Those are just some of the names responsible for pioneering art as we have to come to know and love. Fast forward several years, the Maker Movement is ushering in a new era of visionaries who aspire to revolutionize the scene in a similar fashion by granting the everyday Joe (or Jane) the ability to create their own masterpieces. Doing that just, Copenhagen Institute of Interaction Design student Saurabh Datta recently developed a wearable robotic device that can teach you how to draw.


Aptly named Teacherthe exoskeleton-like gadget gently forces your arm into the repetitive motions required for sketching simple shapes using force feedback and haptic response systems. Once strapped to the hand, the wearable directs a user’s wrist and fingers to the necessary positions, while the machine itself records the movement. It then repeats the motion and forces the hand to go to those previous positions, thereby creating a device rhythm.

Before focusing his efforts toward the drawing experience, Datta explored the use feedback mechanisms as a way to give piano lessons. While the first contraption controlled a single finger, the second took care of controlling the learner’s wrist — thus capable of modulating the hand movement over the whole keyboard.


“The whole notion is to understand when machines start knowing more about you and they start showing that to you as feedback — sometimes which may appear against our will, how do you act upon it. On one hand it can act as a teacher and on the other it might appear as machines are operating us,” Datta writes.


In order to bring this creation to life, the Maker salvaged 3D printer components and reused their encoders along with (what appears to be) an Arduino and a few EMG nodes. So far, there have been three iterations of Teacher prototypes, each of which demonstrate the potential of machine-led instruction. For Datta, however, the ideal scenario would incorporate both learning and teaching from robotics.

For initial purposes, Datta had employed an Arduino Yún (ATmega32U4), which was later shrunken down to an Arduino Pro Mini (ATmega328) for the final, more compact prototype.


“We can be better in designing an enabling system rather than just service robots, systems that allow us to do things ourselves better or making us better in certain things rather than doing it for us all the time.”

As to what inspired Datta to pursue this idea, the Maker shares, “I remember when I started first learning alphabets my teachers used to hold my hand with the pen and trace on the paper multiple times, the letters. After letting me go I would do it over and over again and finally it achieved a muscle memory and I could do it by myself. I’m taking this metaphor of the importance of holding hands when learning a new skill.”

Intrigued? Those wishing to learn more can watch Data’s entire thesis below, as well as access technical details on its official project page here.


Charlie and Billy are cute, smartphone-controlled bots

An Israeli engineer designs a pair of bio-inspired, 3D-printed hexapod robots. 

If you’ve ever stopped by one of our Maker Faire booths, then you surely know our love for hexapod robots. Just ask “Wizard of Make” Bob Martin. Inspired by UC-Berkeley’s recent STAR project, Israel-based Maker Jonathan Spitz recently created a 3D-printed, blue beetle-like bot named Billy.


The proof-of-concept is not only comprised of 3D-printed parts, but is powered by an an Arduino Leonardo (ATmega32U4), a pair of LiPo batteries and dual DC motors. Billy can be controlled using a joystick smartphone app via a built-in Bluetooth module, while his two different sets of legs — straight and spiral — allow him to navigate any terrain.

Shortly after the success of his first build, Spitz decided to develop a second working prototype. Charlie is 3D-printed, cricket-esque hexapod robot that can also be controlled via a mobile device. Impressively, Billy’s smaller and smarter sibling is capable of walking upside down (if he ever flips), climbing over objects of his size, as well as maneuvering up slopes as steep as 45 degrees. The latest iteration of the bot is driven by an Arduino Micro, which receives commands through Bluetooth. The ATmega32U4 based board relays signals to two “baby orangutan” microprocessors that control Charlie’s four motors, which of course, are used for strolling and sprawling.

While Billy consists of 20 parts, Charlie’s 38 different components will require a little longer to assemble. Interested in learning more about the bot brothers? Head on over to their official page here. Meanwhile, watch them in action above!

Automate your bed warmer for those cold nights

For many of us, especially those in the Northern Hemisphere, winter is in full swing. This means shorter days, wintry weather, and unfortunately for those without a bed warmer, long, freezing nights. However, even those with such a gadget can still find their slumbers to be interrupted by frigid temps. That’s why, a Maker by the name of “LC” has developed an electronically-controlled and automated enhancement for his bed warmer.


While the original device uses a mechanical potentiometer to set the heat level, LC was able to override the controller’s temperature using a digital potentiometer. So, whenever the Maker was too cold at night, he could simply switch over to full automation using a real-time clock for remote scheduling. Not only would this enable him to take command of the bed warmer, but preserves the original functionality of the controller as well.

“I’m a big fan of not disturbing the functionality implemented in the OEM design, and thereby retaining all of the existing capabilities of devices I am modding. I do this so that I can always turn my enhancements off and continue using the product’s stock functionality. It makes no sense (to me) if the original device breaks or ceases to operate and provide the original functionality if my ‘upgrades’ fail to function. In that case our upgrade could be said to now be working against us instead of for us (1 step forward, two steps back),” the Maker writes.

An Arduino Micro (ATmega32U4) serves as the master control of the project and is responsible for handling the override from mechanical to digital potentiometer when a connected capacitive touch wheel is triggered. This means that when someone attempts to take manual control of the device, the ATmega32U4 based ‘duino can switch the override circuit off.


“Future versions may eliminate the mechanical controller altogether (and the corresponding mechanical pot on the PCB) with a master (interactive) control interface using an LCD with capacitive touch sensing and a custom user interface,” LC adds.

Not only is this an innovative way to find some warmth in your nightly slumber, but can also be quite cost-effective: less heating the room, more the individual. Makers combatting the wintry months up north can learn all about LC’s project here.